Retaining Wall Drilling

Specialist Drilling Sevices Victoria

Retaining Wall Drilling relies on strong, accurately drilled foundations and EDC Australia delivers precision drilling services designed to support structural retaining systems across Australia. We specialise in drilling boreholes for retaining wall posts, and engineered earth retention structures.
Our team uses advanced drilling equipment to create clean, consistent bores to the exact depth and diameter required for steel H beams, concrete posts, and heavy-duty retaining wall supports.

Whether your project involves residential landscaping, commercial developments, road upgrades, or large scale civil works, we ensure every bore is drilled to meet engineering specifications and long-term load requirements. From soft soils to hard rock, we manage all ground conditions with efficiency and accuracy. Every retaining wall drilling project is completed with a strong focus on safety, stability, and minimal site disruption delivering reliable foundations that stand the test of time.


  • Versatile Applications Suitable for residential, commercial, and large-scale infrastructure drilling needs.
  • Precision & Safety Expert operators ensure precise drilling while maintaining strict safety and regulatory standards.
  • Advanced Equipment Heavy-duty drilling equipment capable of handling a wide range of soil and rock conditions.
  • Reliable Project Delivery Timely, professional service with minimal disruption and expert guidance throughout the process.

We use industry best practices and customised equipment for drilling basalt efficiently with our owned and operated machinery:

  • Equipment selection: EDC Australia has a large range of heavy-duty, custom-made core barrels and rock drills designed for all hard rock applications. Our experienced operators ensure the correct equipment and methods are applied to achieve best results.
  • Tungsten carbide rock teeth: EDC Australia uses only premium tungsten carbide rock teeth that resist wear and maintain sharpness when cutting through hard, dense rock.
  • Proper drilling speed and pressure: Using the correct down force and rotation speed for the conditions, ensures that the equipment can continue to cut the rock efficiently.
  • Use of Water: Cooling and lubricating the drill can reduce friction, remove cuttings, and limits heat buildup. This also reduces environmental impact from dust.
  • Pre-drilling or pilot holes: Depending on the site-specific conditions, pre drilling pilot holes can be effective for drilling larger diameter bored piers.
  • Regular maintenance: EDC Australia completes all maintenance and repair works inhouse to minimise downtime; ensuring a reliable service to their customers
  • Following these practices helps maximize efficiency, extend equipment life, and provide a quality and stress-free drilling service - with a strong focus on delivering value for money.

Sedimentary

  • Sedimentary rocks are made when small pieces of minerals or plants build up and get pressed together over time. They often form in layers called strata. Common examples are sandstone, limestone, mudstone, siltstone and shale.
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Igneous

  • Igneous rocks form volcanic activity when hot, melted rock called magma or lava cools and hardens. If it cools slowly underground, large crystals form, like in some types of granite. If it cools quickly on the surface, the crystals are small, like in basalt.
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Auger

  • An auger is a drilling tool used on machinery to bore holes into the ground. It features a spiral-shaped blade that rotates to lift soil out as it drills. Augers can be custom made to suit a variety of ground conditions ranging from sand and clays and to hard rock.
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Core Barrel

  • A core barrel is designed specifically for drilling for hard / dense rock. It is engineered to cut by grinding in a precise circular path, while resulting in the extraction of a solid cylindrical core.
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Auger Drilling

We use industry best practices and customised equipment for drilling efficiently with our owned and operated machinery.

Core Barrel Drilling

EDC has the ability to tailor their approach based on the variable ground conditions of each job. We are able to select and utilise the correct high-quality equipment to achieve optimal results.